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Types of Axons
Axons are of two types
In the case of myelinated axons the neurilemma is ensheathed by another covering, the myelin sheath, composed of complex lipoproteins. The terminal branches, dendrites, cell body (perikaryon) and the initial region of the axon (the axon hillock) are devoid of myelin sheath: Although the dendrites are relatively short, unsheathed, tapering, irregular in diameter, and branched in a wide array of patterns, the cell body cytoplasm extends into them. The dendrites receive synaptic endings over much of their surface and thus constitute the receptive surface of the neuron. They are like receiving antennae as a nerve cell receives messages along the dendrites but sends messages along the axon.
CLOSED HEART SURGERY : Operative procedures on the heart or major intra thoracic vessels done when the heart is beating and supporting effective circulation come under the ca
The cost of replacing these indirect uses of biodiversity, even if it were technically possible, would be so high as to render it impossible to duplicate. We also do not know how
Explain the Atmospheric Dispersion Modeling 1. Dispersion model is a mathematical description of the meteorological transport and dispersion process that is quantified in terms
TRISACCHARIDES The oligosaccharides are made of three monosaccharide residues. A common trisaccharides is Raffinose which is formed by condensation of galactose-glucose-fr
Explain Metabolic changes during infection With the rise in body temperature above normal (98.4 0 F or 37°C) due to infection several metabolic changes occur in the body
During mitosis ER and nucleolus begin to disappear at: 1. Late prophase 2. Early metaphase 3. Late metaphase 4. Early prophase Late prophase
Regulation of Glycogenesis Glycogen synthase, the key enzyme in glycogenesis, is activated by insulin and glucose and inhibited by CAMP.
Transfer RNA (tRNA) molecules play an very significant role in protein synthesis. Each tRNA becomes covalently bonded to a particular amino acid to create aminoacyl- t
Q. How does synaptic transmission between neurons take place? The propagation of the action potential along the axon reaches the region immediately anterior to the presynaptic
What is Eutrophication in ecology explain briefly? Freshwater ecosystems demonstrate the close relationship between aquatic and terrestrial ecosystems. Until recently, most peo
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